ciaraldi@cs.rochester.edu (Mike Ciaraldi) (08/18/89)
I recently "inherited" an HP Series 9000 Model 310 system, equipped with a 9153 disk system (floppy plus 10 Meg hard disk). It was originally set up with BASIC version 4, and we just upgraded to BASIC 5.13. The manuals for the new BASIC haven't arrived yet. [I realize that this is not a Precision Architecture machine running Unix and X-Windows, but it does the job it was bought for]. Recently we started running out of space on the hard disk (no kidding, with only 10 Meg, but it gets worse). When we added up the files, they only came to about 1.5 Megabytes! Some poking around with the BASIC utilities seems to indicate that the hard disk has been partitioned (by the previous user) to four volumes of about 2 Meg each (actually about 9800 records of 256 bytes). I tried using INITIALIZE again, but this only formats one partition at a time. So, my question is: How do you un-partition the hard disk, and get it back to being just one volume? I did call the local HP office, and they said everyone who knew this sort of thing was out of town. While we're on the subject of disks, I see that BASIC 5 now supports a Hierarchical File System. How much overhead does this consume on the disk? And does it eliminate the requirement that files be stored on contiguous blocks? Thanks in advance, Mike Ciaraldi uucp: ...rutgers!rochester!ciaraldi arpa: ciaraldi@cs.rochester.edu
rjn@hpfcdc.HP.COM (Bob Niland) (08/19/89)
re: "I recently "inherited" an HP Series 9000 Model 310 system,
equipped with a 9153 disk system (floppy plus 10 Meg hard disk)."
> When we added up the files, they only came to about 1.5 Megabytes!
> Some poking around with the BASIC utilities seems to indicate that
> the hard disk has been partitioned (by the previous user)
> to four volumes of about 2 Meg each
> I tried using INITIALIZE again, but this only formats one partition
> at a time.
The choice of reformat-current-config or reformat-new-config is made by a
switch on the back of the drive. It is different for the 9153A, B and C.
You need the appropriate owner's manual.
I suggest reformatting as a single volume, using the HFS file system. You
will lose all existing data when you do this, so be sure to back up what you
have.
> While we're on the subject of disks, I see that BASIC 5 now supports
> a Hierarchical File System. How much overhead does this consume on
> the disk?
As I recall, it requires 512 bytes per [BASIC-type] file.
> And does it eliminate the requirement that files be
> stored on contiguous blocks?
I think so.
Regards, Hewlett-Packard
Bob Niland rjn%hpfcrjn@hplabs.HP.COM 3404 East Harmony Road
[hplabs|hpu...!hpfcse]!rjn Ft Collins CO 80525-9599stevem@pserv.UUCP (Steve Mestad) (08/19/89)
In article <1989Aug18.014354.189@cs.rochester.edu> ciaraldi@cs.rochester.edu (Mike Ciaraldi) writes: >I recently "inherited" an HP Series 9000 Model 310 system, >equipped with a 9153 disk system (floppy plus 10 Meg hard disk). >the hard disk has been partitioned (by the previous user) >to four volumes of about 2 Meg each (actually about 9800 records of 256 bytes). > So, my question is: How do you un-partition the >hard disk, and get it back to being just one volume? Look at the back of the drive next to the hpib connector...On 1 side is the HPIB address wheel. On the other, is the 'configuration switch'. This tell the drive how to split itself up. Its a BCD type switch labelled from 0 to 9. Set it to 0. See pages 3-3 to 3-5 of the 9153/9154 manual (Geting started with)... Steve Mestad....stevem%pserv@src.honeywell.com (Hopefully this will get out in a reasonable amount of time.... Our UUCP link is not getting through from either end very often.)
stevem@pserv.UUCP (Steve Mestad) (08/19/89)
In article <109@pserv.UUCP> stevem@pserv.UUCP (Steve Mestad) writes: >Look at the back of the drive next to the hpib connector...On 1 side >is the HPIB address wheel. On the other, is the 'configuration switch'. >This tell the drive how to split itself up. Its a BCD type switch >labelled from 0 to 9. Set it to 0. > >See pages 3-3 to 3-5 of the 9153/9154 manual (Geting started with)... Well, I checked the back of some 9153/9154 drives we have. The documented switch isnt there like TFM says it is. (Should have looked closer before my post right?) Suggestions: 1) remove screws and pull out interface board to see if the switch is on it and just not accessable from the outside. Use ESD precautions naturally. 2) try formatting using the unit and volume numbers. maybe those are the keys now instead of the switch. did you use unit #0, vol #0? 3) take the top off the drive and look in there for a board with a bcd on it. (Getting dangerous now right? :-) There could be some interesting jumpers too. (No I havent torn apart my drives to verify this either. Have had others apart though and the jumpers are quite interesting) I recommend #1 and #2 be tried. #3 only if you have experience in the guts of the hardware and know what you can get away with. Write down the original state of ALL switches and jumpers changed. At least then you can get the thing working the way it did when you started. (No, you wont remember the settings later. Later is always longer than you thought and by then so much will have been tried that all the positions seem reasonable. But then again, I was working on DEC boards :-)) Good luck....(No, I dont make a habit of using basic but I've read about those partitions you're trying to deal with). Steve Mestad, stevem%pserv@src.honeywell.com
steve@hpfcdc.HP.COM (Steve Taylor) (08/19/89)
} > While we're on the subject of disks, I see that BASIC 5 now supports a } > Hierarchical File System. How much overhead does this consume on the disk? } As I recall, it requires 512 bytes per [BASIC-type] file. } > And does it eliminate the requirement that files be stored on contiguous } > blocks? } I think so. From "Installing and Maintaining the BASIC 5.0/5.1 System", p2-6: (adapted slightly) Disc Size Approx. Overhead 270K floppy 44% 640K floppy 22% 720K floppy 18% 55M hard disk 6% 130M hard disk 6% Of course, this doesn't include the size you're interested in, but the trend is clear. The 512 bytes per file applies to typed files. 5.0 also added an "untyped" data file which does not have this header. Yes, it eliminates the requirement that files be contiguous. Some other considerations (from p2-5 of the above reference): Feature: HFS: LIF: Directory Hierarchical Single directory structure (multi-directory) on each volume structure Multiple systems HP-UX, BASIC, and BASIC and Pascal can on same volume Pascal systems can share a disk share a disk Extensible files Files are extensible File length is fixed (when a file would otherwise overflow, the system automatically adds space to it) Access times Generally slower Generally faster than LIF than HFS TRANSFER Not implemented as True background process a background process and high data rates Overhead required Requires more Requires less overhead overhead than LIF than HFS
wehr@fmeed1.UUCP (Bruce Wehr) (08/21/89)
In article <1989Aug18.014354.189@cs.rochester.edu>, ciaraldi@cs.rochester.edu (Mike Ciaraldi) writes: > [...] So, my question is: How do you un-partition the > hard disk, and get it back to being just one volume? The partitioning on the 9153 is *hard* partitioning, controlled by a configuration switch on the back. It is a small rotary switch, and can be used to select a number of different configurations. To get one large partition, set this switch to 0 and INITIALIZE the disk again. > While we're on the subject of disks, I see that BASIC 5 now supports > a Hierarchical File System. How much overhead does this consume on > the disk? And does it eliminate the requirement that files be > stored on contiguous blocks? It's the same file system HP-UX uses. It has the same features and requirements as such (i.e. no contiguous block requirement). -- Bruce Wehr (wehr%dptc.decnet@srlvx0.srl.ford.com) (...!mailrus!sharkey!fmeed1!wehr) (wehr%fmeed1.uucp@mailgw.cc.umich.edu) Ford Motor Company - Electronics Division 17000 Rotunda Drive, DPTC Room LN081, Dearborn, Michigan 48121 (313)845-3039